NFLX would prefer we not measure their offerings against AMZN's. That's what I think, anyway. Amazon has more headliners than they know what to do with - they rotate them on and off Prime's frontpage regularly enough to give the impression you'll never watch all of it. Netflix, on the other hand... Netflix and I fought an 18-month staring contest over whether I was going to watch The Lincoln Lawyer.
I don't think that's the case as they are allowing Can I Stream It? to stay up which is specifically for seeing what streaming services (including Amazon) offer particular titles.